Produção Nacional
Influência das variações hidrometeorológicas na qualidade da água do baixo rio Itajaí-Mirim, município de Itajaí (SC)
2020; UNIVERSIDADE FEDERAL DE SANTA MARIA; Volume: 42; Linguagem: Inglês
10.5902/2179460x55301
ISSN2179-460X
AutoresEvandro Oscar Mafra, Eduardo Augusto Werneck Ribeiro, Viviane Tranker, Aline Pereira Gomes,
Tópico(s)Water Quality and Pollution Assessment
ResumoThe Itajaí-Mirim River located in Santa Catarina, in the region of the low estuary of the Itajaí-Açu River, is the place where most of the water supplied for consumption is consumed by the Municipalities of Itajaí and Navegantes, the São Roque catchment station. This study aims to analyze the water quality in the Itajaí-Mirim river before and after the implantation of the dam in the Itajaí-Mirim river, based on a monitoring of physical-chemical parameters. The collections described in this report were carried out at six sample points, from January to December 2007, with the purpose of physically and chemically characterizing the environment in the rectified channel and, also, in the original bed of Itajaí-Mirim. The parameters measured in situ serve to assess the general state of water quality at the time of sampling. The main parameters measured, four of them deserve special attention (pH, Turbidity, Dissolved Oxygen and Salinity) and the correlated environmental parameters were flow rate and precipitation. In general, depending on the main results obtained, the analyzed waters can be classified in Class 2 of fresh waters, according to the limit values of CONAMA Resolution No. 357/05, and for the sampled period, precipitation and flow influenced the water quality.
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